Example usage for android.graphics Color alpha

Introduction

In this page you can find the example usage for android.graphics Color alpha.

Prototype

@IntRange(from = 0, to = 255)
public static int alpha(int color) 

Source Link

Document

Return the alpha component of a color int.

Usage

From source file:tk.wasdennnoch.androidn_ify.utils.NotificationColorUtil.java

private int processColor(int color) {
    return Color.argb(Color.alpha(color), 255 - Color.red(color), 255 - Color.green(color),
            255 - Color.blue(color));
}

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From source file:com.example.android.drawabletinting.DrawableTintingFragment.java

/**
 * Update the tint of the image with the color set in the seekbars and selected blend mode.
 * The seekbars are set to a maximum of 255, with one for each of the four components of the
 * ARGB color. (Alpha, Red, Green, Blue.) Once a color has been computed using
 * {@link Color#argb(int, int, int, int)}, it is set togethe with the blend mode on the background
 * image using/*w ww .  j  a  v  a2s.  c  o  m*/
 * {@link android.widget.ImageView#setColorFilter(int, android.graphics.PorterDuff.Mode)}.
 */
public void updateTint(int color, PorterDuff.Mode mode) {
    // Set the color hint of the image: ARGB
    mHintColor = color;

    // Set the color tint mode based on the selection of the Spinner
    mMode = mode;

    // Log selection
    Log.d(TAG, String.format("Updating tint with color [ARGB: %d,%d,%d,%d] and mode [%s]", Color.alpha(color),
            Color.red(color), Color.green(color), Color.blue(color), mode.toString()));

    // Apply the color tint for the selected tint mode
    mImage.setColorFilter(mHintColor, mMode);

    // Update the text for each label with the value of each channel
    mAlphaText.setText(getString(R.string.value_alpha, Color.alpha(color)));
    mRedText.setText(getString(R.string.value_red, Color.red(color)));
    mGreenText.setText(getString(R.string.value_green, Color.green(color)));
    mBlueText.setText(getString(R.string.value_blue, Color.blue(color)));
}

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From source file:org.getlantern.firetweet.view.ShapedImageView.java

public void setBorderColor(int color) {
    setBorderColorsInternal(Color.alpha(color), color);
}

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From source file:dimchoi.com.my.widget.AnimatedSvgView.java

@SuppressLint("DrawAllocation")
@Override/*  www . ja  v  a 2  s  .  c  o  m*/
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    if (mState == STATE_NOT_STARTED || mGlyphData == null) {
        return;
    }

    long t = System.currentTimeMillis() - mStartTime;

    // Draw outlines (starts as traced)
    for (int i = 0; i < mGlyphData.length; i++) {
        float phase = constrain(0, 1,
                (t - (mTraceTime - mTraceTimePerGlyph) * i * 1f / mGlyphData.length) * 1f / mTraceTimePerGlyph);
        float distance = INTERPOLATOR.getInterpolation(phase) * mGlyphData[i].length;
        mGlyphData[i].paint.setColor(mTraceResidueColors[i]);
        mGlyphData[i].paint
                .setPathEffect(new DashPathEffect(new float[] { distance, mGlyphData[i].length }, 0));
        canvas.drawPath(mGlyphData[i].path, mGlyphData[i].paint);

        mGlyphData[i].paint.setColor(mTraceColors[i]);
        mGlyphData[i].paint.setPathEffect(new DashPathEffect(
                new float[] { 0, distance, phase > 0 ? mMarkerLength : 0, mGlyphData[i].length }, 0));
        canvas.drawPath(mGlyphData[i].path, mGlyphData[i].paint);
    }

    if (t > mFillStart) {
        if (mState < STATE_FILL_STARTED) {
            changeState(STATE_FILL_STARTED);
        }

        // If after fill start, draw fill
        float phase = constrain(0, 1, (t - mFillStart) * 1f / mFillTime);
        for (int i = 0; i < mGlyphData.length; i++) {
            GlyphData glyphData = mGlyphData[i];
            int fillColor = mFillColors[i];
            int a = (int) (phase * ((float) Color.alpha(fillColor) / (float) 255) * 255);
            int r = Color.red(fillColor);
            int g = Color.green(fillColor);
            int b = Color.blue(fillColor);
            mFillPaint.setARGB(a, r, g, b);
            canvas.drawPath(glyphData.path, mFillPaint);
        }
    }

    if (t < mFillStart + mFillTime) {
        // draw next frame if animation isn't finished
        ViewCompat.postInvalidateOnAnimation(this);
    } else {
        changeState(STATE_FINISHED);
    }
}

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From source file:com.ibm.mil.readyapps.physio.fragments.PainLocationFragment.java

/**
 * Pulls the bitmap image of the body part out of its RelativeLayout, colors it appropriatly,
 * and then tells the zoomLayout where it needs to zoom to. Also swaps the FRONT/BACK buttons
 * for the ADD/DELETE buttons.//from   www . j a  v a2s  .c  om
 *
 * @param image the body part the touch occured in.
 */
private void zoomOnImage(RelativeLayout image) {

    Bitmap bitm = ((BitmapDrawable) image.getBackground()).getBitmap();

    Bitmap temp = bitm.copy(bitm.getConfig(), true);
    int[] pixels = new int[temp.getHeight() * temp.getWidth()];

    temp.getPixels(pixels, 0, temp.getWidth(), 0, 0, temp.getWidth(), temp.getHeight());

    for (int i = 0; i < temp.getHeight() * temp.getWidth(); i++) {

        if (pixels[i] != 0) {

            int r, g, b;

            if (!blue) {
                r = Color.red(pixels[i]) + 100;
                if (r > 255) {
                    r = 255;
                }
                g = Color.green(pixels[i]) - 50;
                b = Color.blue(pixels[i]) - 50;
            } else {
                r = Color.red(pixels[i]) - 30;
                g = Color.green(pixels[i]) + 15;
                b = Color.blue(pixels[i]) + 100;
                if (b > 255) {
                    b = 255;
                }

            }
            pixels[i] = Color.argb(Color.alpha(pixels[i]), r, g, b);
        }
    }

    temp.setPixels(pixels, 0, temp.getWidth(), 0, 0, temp.getWidth(), temp.getHeight());
    image.setBackground(new BitmapDrawable(getResources(), temp));

    Rect rect = new Rect();
    image.getGlobalVisibleRect(rect);

    zoomLayout.zoomToRect(rect, 0, getYOffset());
    current = image;
    zoomed = true;
    swapButtons();

    placePointer(rect.centerX(), rect.centerY());

}

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From source file:com.ridgelineapps.wallpaper.Utils.java

public static Paint createPaint(Paint p, int colorChange, int alphaChange) {
    int a = Color.alpha(p.getColor()) + alphaChange;
    int r = Color.red(p.getColor()) + colorChange;
    int g = Color.green(p.getColor()) + colorChange;
    int b = Color.blue(p.getColor()) + colorChange;
    if (a < 0)
        a = 0;/*from   w ww . j  a v  a  2 s.  co  m*/
    if (a > 255)
        a = 255;
    if (r < 0)
        r = 0;
    if (r > 255)
        r = 255;
    if (g < 0)
        g = 0;
    if (g > 255)
        g = 255;
    if (b < 0)
        b = 0;
    if (b > 255)
        b = 255;
    return createPaint(a, r, g, b);
}

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From source file:com.rks.musicx.misc.utils.Helper.java

/**
 * Return alpha color//from  w  w w . j  av  a2  s  . c  om
 *
 * @param color
 * @param ratio
 * @return
 */
public static int getColorWithAplha(int color, float ratio) {
    int transColor;
    int alpha = Math.round(Color.alpha(color) * ratio);
    int r = Color.red(color);
    int g = Color.green(color);
    int b = Color.blue(color);
    transColor = Color.argb(alpha, r, g, b);
    return transColor;
}

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From source file:com.jrummyapps.android.widget.AnimatedSvgView.java

@SuppressLint("DrawAllocation")
@Override//from  w w w.j a v a 2 s . c  o  m
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    if (mState == STATE_NOT_STARTED || mGlyphData == null) {
        return;
    }

    long t = System.currentTimeMillis() - mStartTime;

    // Draw outlines (starts as traced)
    if (t < mFillStart + mFillTime) {
        for (int i = 0; i < mGlyphData.length; i++) {
            float phase = constrain(0, 1, (t - (mTraceTime - mTraceTimePerGlyph) * i * 1f / mGlyphData.length)
                    * 1f / mTraceTimePerGlyph);
            float distance = INTERPOLATOR.getInterpolation(phase) * mGlyphData[i].length;
            mGlyphData[i].paint.setColor(mTraceResidueColors[i]);
            mGlyphData[i].paint
                    .setPathEffect(new DashPathEffect(new float[] { distance, mGlyphData[i].length }, 0));
            canvas.drawPath(mGlyphData[i].path, mGlyphData[i].paint);

            mGlyphData[i].paint.setColor(mTraceColors[i]);
            mGlyphData[i].paint.setPathEffect(new DashPathEffect(
                    new float[] { 0, distance, phase > 0 ? mMarkerLength : 0, mGlyphData[i].length }, 0));
            canvas.drawPath(mGlyphData[i].path, mGlyphData[i].paint);
        }
    }

    if (t > mFillStart && t < mFillStart + mFillTime) {
        if (mState < STATE_FILL_STARTED) {
            changeState(STATE_FILL_STARTED);
        }

        // If after fill start, draw fill
        float phase = constrain(0, 1, (t - mFillStart) * 1f / mFillTime);
        for (int i = 0; i < mGlyphData.length; i++) {
            GlyphData glyphData = mGlyphData[i];
            int fillColor = mFillColors[i];
            int a = (int) (phase * ((float) Color.alpha(fillColor) / (float) 255) * 255);
            int r = Color.red(fillColor);
            int g = Color.green(fillColor);
            int b = Color.blue(fillColor);
            mFillPaint.setARGB(a, r, g, b);

            canvas.drawPath(glyphData.path, mFillPaint);
        }
    }

    if (t > mFillStart + mFillTime) {
        float phase = (t - mDisappearTime - mFillStart) * 1f / mFillTime;
        if (phase < 0)
            phase = 0;
        else if (phase > 1)
            phase = 1;

        for (int i = 0; i < mGlyphData.length; i++) {
            GlyphData glyphData = mGlyphData[i];
            int fillColor = mFillColors[i];
            int a = 255 - (int) (phase * ((float) Color.alpha(fillColor) / (float) 255) * 255);
            int r = Color.red(fillColor);
            int g = Color.green(fillColor);
            int b = Color.blue(fillColor);
            mFillPaint.setARGB(a, r, g, b);
            canvas.drawPath(glyphData.path, mFillPaint);

            mGlyphData[i].paint.setAlpha(a);
            canvas.drawPath(mGlyphData[i].path, mGlyphData[i].paint);

        }

    }

    if (t < mFillStart + mDisappearTime + mFillTime) {
        // draw next frame if animation isn't finished
        ViewCompat.postInvalidateOnAnimation(this);
    } else {
        changeState(STATE_FINISHED);
    }
}

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From source file:com.jaredrummler.android.colorpicker.ColorPanelView.java

/**
 * Show a toast message with the hex color code below the view.
 *//*from ww  w . ja va2s  .  c o m*/
public void showHint() {
    final int[] screenPos = new int[2];
    final Rect displayFrame = new Rect();
    getLocationOnScreen(screenPos);
    getWindowVisibleDisplayFrame(displayFrame);
    final Context context = getContext();
    final int width = getWidth();
    final int height = getHeight();
    final int midy = screenPos[1] + height / 2;
    int referenceX = screenPos[0] + width / 2;
    if (ViewCompat.getLayoutDirection(this) == ViewCompat.LAYOUT_DIRECTION_LTR) {
        final int screenWidth = context.getResources().getDisplayMetrics().widthPixels;
        referenceX = screenWidth - referenceX; // mirror
    }
    StringBuilder hint = new StringBuilder("#");
    if (Color.alpha(color) != 255) {
        hint.append(Integer.toHexString(color).toUpperCase(Locale.ENGLISH));
    } else {
        hint.append(String.format("%06X", 0xFFFFFF & color).toUpperCase(Locale.ENGLISH));
    }
    Toast cheatSheet = Toast.makeText(context, hint.toString(), Toast.LENGTH_SHORT);
    if (midy < displayFrame.height()) {
        // Show along the top; follow action buttons
        cheatSheet.setGravity(Gravity.TOP | GravityCompat.END, referenceX,
                screenPos[1] + height - displayFrame.top);
    } else {
        // Show along the bottom center
        cheatSheet.setGravity(Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, height);
    }
    cheatSheet.show();
}

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From source file:com.andremion.music.MusicCoverView.java

public void setTrackColor(@ColorInt int trackColor) {
    if (trackColor != getTrackColor()) {
        int alpha = (mShape == SHAPE_CIRCLE) ? ALPHA_OPAQUE : ALPHA_TRANSPARENT;
        mTrackPaint.setColor(trackColor);
        mTrackAlpha = Color.alpha(trackColor);
        mTrackPaint.setAlpha(alpha * mTrackAlpha / ALPHA_OPAQUE);
        invalidate();//from   w w  w  . jav a2  s  .  co m
    }
}

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